Tensile strain values of rice starch films were higher than the
values found for rice flour films. This result can be explained by
both the existence of irregularities at the microstructure level, and
the presence of lipids in the flour, because lipids are unable to form
a cohesive and continuous matrix, according Films of starch and flour with 0.2 g plasticizer/g raw material
showed low values of strain at break (3 ¼ 2.2–2.8%), and presented
higher tensile strength values. Tensile strength was more influenced
by plasticizer content in films plasticized with glycerol than
in films plasticized with sorbitol.